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Binbin Qi


China University of Petroleum

Last seen: 3 days ago Active since 2009

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Professional Interests: Machine Learning/ Math/ Geophysics

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  • MATLAB Central Treasure Hunt Finisher
  • Cody 5th Anniversary Finisher
  • Knowledgeable Level 2
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  • R2016b Feature Challenge Master
  • Divisible by x Master
  • Personal Best Downloads Level 2
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  • Logic
  • Computational Geometry I Master
  • Matrix Patterns II Master
  • Introduction to MATLAB Master

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Průměr z výběrového souboru
Napište funkci, která vrátí průměr z hodnot vektoru data. Např data = [1, 2, 3, 4, 5, 6, 7, 8, 9] je prumer = 5.

5 days ago

Solved


Armstrong Number
Write a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True...

4 months ago

Solved


Given a matrix X, manipulate it accordingly
Given a matrix X, 1st add a column to the matrix whose elements are the summation of each rows. Then add a row to the matrix who...

4 months ago

Solved


Orthogonalize 3 column vectors using the Gram-Schmidt process
Use the Gram-Schmidt process to orthogonalize three linearly independent column vectors. Return three output column vectors that...

4 months ago

Solved


Orthogonalize a 2x2 matrix using the Gram-Schmidt process
Use the Gram-Schmidt process to orthogonalize two linearly independent column vectors. Return two output column vectors that are...

4 months ago

Solved


Matrix symmetry
Given a matrix A = [1 2 3; 4 5 6] Flip it horizontally and vertically to obtain a complete reversal of both rows and columns. ...

4 months ago

Solved


Create an m x n array consisting only of an input value.
Create an array with m rows and n columns wherein all entries are assigned the input value x.

4 months ago

Solved


Return part of an array
Given a 5x5 array, return a 3x3 array that contains the cells that are not on the edge of the array: Given this array Return...

4 months ago

Solved


Summing the last column column
Given a matrix, return the sum of the last column of the array.

4 months ago

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Count integers in randomized vector that are multiples of a given number.
The mod() function We might all remember the days when we were taught to divide and then set the remainder aside if the numbers...

4 months ago

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Find the mean of the magic x
Given a x term, find the magic x, then find the mean/average of any one row or column.

4 months ago

Solved


nxn matrix with elements from 1:n^2
really simple once you see what the matrix is supposed to look like. i appreciate what seems to be a clever approach to solving ...

4 months ago

Solved


Find alternating sum
Given an array, find alternating sum i.e. – y = x (1) – x (2) + x (3) – x (4) + x (5) - …

4 months ago

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Check for armstrong number
Given a number, check if it is an armstrong number. Eg: n = 371 Output: 1 Eg: n = 75 Output: 0

4 months ago

Solved


Extract the prime numbers
Given a list of elements, extract the prime numbers from that array.

4 months ago

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How many offices does MathWorks have in the UK
Please write a function that returns the number of offices MathWorks has in the UK.

4 months ago

Solved


Add Even and Subtract Odd Numbers in an Array
For an input array, add all the even values and subtract the odd values. This final value is the output. E.g. input = [1 2 3 4...

4 months ago

Solved


Harmonic series counting
The function takes a positive limit as input, And counts how many terms must be summed in the harmonic series: 1/1, 1/2, 1/3, ...

4 months ago

Solved


A times B
A times B

4 months ago

Solved


Remove a specific row with max value
Remove the row that contain the max value in the matrix?

4 months ago

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Remove a specific row with min value
Remove the row that contain the min value in the matrix?

4 months ago

Solved


Remove a specific column with max value
Remove the column that contain the max value in the matrix?

4 months ago

Solved


Remove a specific column with min value
Remove the column that contain the min value in the matrix?

4 months ago

Solved


Swap between first and last
The idea is to swap between first and last row Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved


Swap between first and last column
The idea is to swap between first and last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 ...

4 months ago

Solved


Find Rows with Specift Properities
Delete rows with specific properites as following: Find rows that have a negative value in any element of the row and delete it...

4 months ago

Solved


Swap between rows
The idea is to swap between second and second last row Ex = [1 2 3 4 5; 5 4 3 2 1; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved


Swap between columns
The idea is to swap between second and second last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved


Remove a specific character with another
Remove any (-) dash sign with (_) underscore Ex = 'The-Journey-of-thoudsands-miles-starts-with-a-single-step' y = 'The_Jour...

4 months ago

Solved


Hemisphere Volume on Top of a Cylinder
This MATLAB function has to calculate the volume of a hemisphere placed on top of a cylinder, given valid inputs. It takes the r...

4 months ago

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